Method of making partly-covered bullets.



. Patented Aug. 3, i90i. T. 6. SMITH. I METHOD OF MAKING PARTLY BOVERED BULLETS.

(No Model.)

' INVENTOR.

WITNESSES.

UNITED STATES PATENT OFFICE.

THOMAS 0. SMITH, or BRIDGEPORT, CONNECTICUT, ssrenonro THE UNION METALLIC CARTRIDGE COMPANY, OF SAME PLACE.

M ErHoo. OF MAKING rfAnrLY-covsneo BULLETS.

I SPECIiI'FiCATION forming part Of Letters PatentNo. 680,550, datedAuguSi; 13, 1901.

Application filedMs-y -15 1901- Serial No. 60,803. (No specimens) V T0 t2} whom it may concern:

Belt known thatI, THOMAS 0. SMITH, a citi- 4 zen of the United States, residing at Bridgeport, county of Fairfield, State of Connecticut, have invented a new and useful Method of -Making Partly-Covered Bullets, of which the following is a specification;

My invention has for its object the producti'on of partly-covered bullets that willfully meet the requirements of use.

l'leretofore, so far as I am aware, partlycovered or partly-jacketed bullets have not been nsed'to any great extent, for the reason that it was impossible toprevent the covers from stripping from the slugs when fired un less the covers extended over theforward ends of the slugs as well as over the bases thereof. Among the advantages of a short jacket or partly-covered bullet it is imporcovered bullets are used; that although the lead in front of the cover will fill the grooves of the gun-barrel, and thereby secure the greatest possible accuracy, the cover will clean the barrel every time the gun is fired,- therebypreventing any chance of fouling of the gun-barrel even after long continued use,

and, furthermore, that without lessening the range to the slightest extent or impairing the accuracy of results lacerated wounds and great shock will be produced, fact that partly-covered bullets whenfired at a high velocity will mushroom, as it is.

called, or flatten out into a jagged mass when they strike an object that oifers material resistance to their passage. In order to evercome objections to all mushroom-bullets now upon the market and to combine in a single bullet the-advantages of mushroom-bullets characters to owing to the and full-covered tages and without the disadvantages of ordi= bullets with other advan nary mushroom-bullets and full-covered but 1 lots, 1 have devised the novel method of mak ringto the accompanying drawings, forming part of this specification, and using reference designate the several parts. my novel bullets I use simply,

In making an ordinary slug made of lead or a relatively soft'alloy and a relatively short cover made of a he rd metal or alloy, said cover being simply a cup having its upper edge crirnped or turned inward, and the only ap- 65 lug bullets, which I will now describe, referparatus required is two dies and the corre-- spending plungers.

Figure 1 is a vertical section of the first die with the slug therein and the co ver ready for swaging toplace, the corresponding plunger and the ejector being in elevation; Fig. 2, a similar view of the second die, plunger, and ejector, showing the slug and cover as assembled by the first operationin-position for the.

second operation, which completes the bullet; and Fig. 3 is a. section of the bullet as completed by-the second operation.

lil denotes the slug, and 11' the cover, whose upper edge is crirnped or turned inward, as at 12. The exact length of the cover is not of the essence of my invention. I have found'in practice that it is amply sufficient for the purposes of my invention it the cover extends one-fourth to one-third the height of the bullet, although itinay extend one-half or three-fourths its height, if preferred.

-Zi3-denotes the first die, which is provided with a socket 14, which receives both the slug and the cover, as clearly shown in Fig. 1, the

slug being shown as made in the form of a. truncated cone at both ends and the crlmped edge of the cover being placed in engagement with the inwardly-tapering surface of one end of the slug, it being most convenient in'practice to make the bullets with the bases upward, as shown in the drawings. Thesfirst plunger, which I have indicated by 15, is provided on its engaging end with a teat or lug 16, the object of which is to perforate the base of the cover and drive a portion of the metal of the cover into the metal of the slug; My invention is of course not limited to any spa-- pact thejeover and theslng together. 35

The effect of the first operation1l;- e., the

blow of the first plunger upon the uncombined slug and cover while lying in the first dieis'illustrated in connection with the second die, the partly-formed bullet in the second die being the product of the operation of the first die and plunger. It'will be noted that the base of the slug has been squared up, the cover has been driven down over it, the

crimped ed ge of the eoverhas been cleneh ed" 9., turned inward and downward within the slug, so thatthe end of the cover is, in fact,v

inverted -.or turned in the reverse direction within the slug, thus forming an absolute look for the cover-and the base of the cover has been perforated by the lug upon the first plunger and aportion of the metal of the ,cover has been driven into the metal of the Si u g.

The second operation, which is performed by the: second plunger 19"npon thepartlyformed bullet in the second die 18 is simply tocom'plete the swaging operat'ion--t. e., com T. y it will be obvious that the exact position of the crimped edge. ofthe cover after being driven into the slag and of the portion of the base 'of the cover that has been driven into the Slug will never be twice alike, and, furthermore,-

in presence ofttvo witnesses.

' v Witnesses:

that sections of the same bullet at right angles to each other-will show the intu rned metal of the cover in different positions. This, however, is wholly immaterial sofaras the principle of my invention is c'oncerned, the object Of-WhlCll isftirst, to clen'ch the edge of the cover within the slug to prevent the cover from stripping from the sing or turning thereon, and, second, to clench a portion of the metal of the base of the coverwithin'the slug as anadditional means of preventing the cover from turning on the slug.

The result of thesecond operation is clearly illustratedin Fig-. 3.

Having thus described my claim H 1. The herein-describedmethod of making partly-covered bullets which eonsists'in providing a slug with a tapering end and a cover having its edge turned inward tovengage the tape-rot the sing and then s l' bjeetingtlie cover invention, I

and slug to thef'aetionlotdies whereby'the slug-is forced into the eov'er. and theedge ot' thecover is turned intotlte sl'ngan. clenched.

2. The herein-dese I partiy-coveredbullets-whichconsists in providing a'slng with, artaperin'g end ,nd-a'eover having its edge turnedli'nward engage the taper of the slug, thenforoi n g t1 within the slugand dri'vinga'portion of the Sl in v the cover and clenching the edge of the'oo'ver base of the coverfinto the sing an del enehing it therein.

In testimony whereof I a ffix iny' si gnjatn re Thongs if. stirrn. 

